Send signed byte array with Bleak

[bastianpedersen]

Is it possible to send a signed byte array with Bleak?

[dlech]

Can you give more details on the use case? Maybe use something like struct.pack()/struct.unpack() to convert the data.

[bastianpedersen]

Coming from Bluetooth development in Java, I sent bytearrays like this byte[] array = new byte[-90, 118, 92, 0, 0, -12
I need to this in Python too, and I came across the module array.

You can do array = array('b, [-90, 118, 92, 0, 0, -12]) instead of bytearray([-90, 118, 92, 0, 0, -12]), because bytearray in Python can only contain 0-256.

So, I create an object with array = array('b, [-90, 118, 92, 0, 0, -12]) and try to do await client_write_gatt_char(uuid_write, array).
This returns an MarshallingError like this: List, Tuple, Bytearray, or Dictionary required for Dbus array.

My question is, how can I send a signed bytearray with Bleak?

[dlech]

array = bytearray(array('b', [-90, 118, 92, 0, 0, -12]))

or

array = bytearray(array('b', [-90, 118, 92, 0, 0, -12]).tobytes())

?

[bastianpedersen]

Amazing, thank you! 👍🏻 💯